Jovon Robinson was in action early in Auburn's fall camp, and here being stopped by Devaunte Sigler, left, and Jake Holland (Todd Van Emst photo)

AUBURN, Alabama – Auburn will scrimmage today, perhaps for the last time this fall, with a running back corps thinned by caution and a transfer.

Freshman running back Jovon Robinson is leaving Auburn for a junior college or prep school after he was ruled academically ineligible Friday by the NCAA following last week's revelation that at least one his grades was changed by a high school counselor. He had already missed two scrimmages as Auburn waited on the NCAA's ruling.

"It's been a tough road in the last few hours. As you can imagine, he's down," Chizik said after Friday's practice.

His departure leaves Auburn with four running backs on scholarship. That's one more than the Tigers used last season. It's unknown where Robinson stood on the depth chart, but he was clearly behind starting tailbacks Onterio McCalebb and Tre Mason.

Robinson had practiced with the team in summer workouts and the first week-and-a-half of fall practice, but Auburn had held Robinson out since Aug. 10, the first practice after the grade change story came to light.

Other running backs have been limited during scrimmages, too. Mason was kept out of harm's way in Wednesday's scrimmage with a minor injury and Mike Blakely left another after tweaking a knee. McCalebb has gone the distance, and Corey Grant has been in and out of scrimmages. Walk-ons Chandler Shakespeare and Patrick Lymon have also seen plenty of work, partially to make sure the players on top of the depth remained healthy.

Chizik had indicated that today's scrimmage in Jordan-Hare Stadium would be devoted to younger players, anyway.

Mason and McCalebb are penciled in as the starting tailbacks, the job they held in Auburn's bowl win over Virginia. Auburn will also introduce a fullback to the offense this season in Jay Prosch.